Technical Specifications

The document provides detailed technical data for a series of industrial electrical motors/generators, specifically models under the ECO31 series (e.g., ECO31-2SN/2, ECO31-3SN/2, ECO31-1LN/2, ECO31-2LN/2). The ratings are given primarily for 50 Hz and 60 Hz operation at ambient temperatures of 40 °C, with insulation classes H (ΔT=125 °C) and F (ΔT=105 °C).

• Voltage and Connection Types: Rated voltages include 400 V, 460 V, 480 V with configurations such as Series Star (Y), Parallel Star (YY), Series Delta (Δ), and Parallel Delta (ΔΔ).
• Power Ratings: KVA ratings vary by model and phase, with continuous 3-phase ratings provided at cos φ = 0.8 and cos φ = 1.
• Efficiency: Efficiency percentages (η) at class H temperature rise are listed, generally ranging from approximately 86% to over 90%, depending on model and operating conditions.
• Frequency and Speed: Data is provided for both 50 Hz and 60 Hz operation, with corresponding power, efficiency, and noise levels.

Performance Parameters

Key performance parameters include:

• Noise Levels: Sound pressure levels in dB(A) measured at 1 meter and 7 meters distances, ranging from approximately 29 dB(A) to 89 dB(A) depending on model and frequency.
• Air Volume: Airflow rates in cubic meters per minute (m3/min) at 50 Hz and 60 Hz frequencies, indicating cooling performance.
• Weight and Dimensions: Weights are provided in kilograms for different frame forms (B3-B14, MD35), along with flange dimensions and disc coupling specifications.

Mechanical and Thermal Protection

• Protection Ratings: Mechanical protection levels include IP21, IP23, and IP45 options.
• Thermal Protection: Devices such as PTC and PT100 sensors are available for thermal monitoring.
• Accessories: Optional accessories include heaters, bimetallic devices (DSR), and regulators (UVR6).

Standards and Norms

The motors comply with industrial standards for continuous operation at specified temperature rises and ambient conditions. The insulation classes H and F correspond to maximum allowable temperature rises of 125 °C and 105 °C respectively.

Recommendations and Usage Notes

• Motors are rated for continuous operation at 40 °C ambient temperature.
• Selection of connection type (Star or Delta) depends on application voltage and power requirements.
• Thermal protection devices and mechanical protection ratings should be selected based on environmental conditions and safety requirements.

Summary of Key Data Tables

The document includes multiple tables summarizing:

• Electrical ratings (KVA, voltage, phase, power factor, efficiency) at 50 Hz and 60 Hz.
• Noise levels and airflow volumes for cooling performance.
• Mechanical dimensions including flange sizes, number of bolt holes, and coupling dimensions.
• Weight data for different frame types and configurations.

These data support proper motor selection, installation, and maintenance planning.

Contact and Manufacturer Information

Manufacturer: MECCALTE spa, Via Roma, 20 - 36051 CREAZZO (VI) ITALY
Contact: Tel. +39 0444/396111, Fax +39 0444/396166, Email: [email protected]
Website: www.meccalte.com